학술논문
Does Ambiguity Matter? Estimating Asset Pricing Models with a Multiple-Priors Recursive Utility
이용수 7
- 영문명
- Does Ambiguity Matter? Estimating Asset Pricing Models with a Multiple-Priors Recursive Utility
- 발행기관
- 한국계량경제학회
- 저자명
- aehee Jeong Hwagyun Kim Joon Y. Park
- 간행물 정보
- 『한국계량경제학회 학술대회 논문집』2009년 하계학술대회, 1~31쪽, 전체 31쪽
- 주제분류
- 경제경영 > 경제학
- 파일형태
- 발행일자
- 2009.08.30
6,520원
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국문 초록
영문 초록
This paper considers continuous time asset pricing models with stochastic differential utility incorporating decision makers’ concern with ambiguity on true probability measure. In order to identify and estimate key parameters in the models, we use a novel econometric methodology developed recently by Park (2008) for the statistical inference on continuous time conditional mean models.
The methodology only imposes the condition that the pricing error is a continuous martingale to achieve identification, and obtain consistent and asymptotically normal estimates of the unknown parameters. Under a representative agent setting, we empirically evaluate alternative preference specifications including a multiple-prior recursive utility. Our empirical findings are summarized as follows: Relative risk aversion is estimated around 2-5 with ambiguity aversion and 6-14 without ambiguity aversion. Related, the estimated ambiguity aversion is both economically and statistically significant and including the ambiguity aversion clearly lowers relative risk aversion. The elasticity of intertemporal substitution (EIS) is higher than 1, around 2-5 with ambiguity aversion, and quite high without ambiguity aversion. The identification of EIS appears to be fairly weak, as observed by many previous authors, though other aspects of our empirical results seem quite robust.
목차
1 Introduction
2 A Recursive Utility Model with Ambiguity Aversion
3 Econometric Methodology
4 Empirical Results
5 Conclusion
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